package vn.allmobile.ambnews.network;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.zip.GZIPInputStream;

import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.params.ConnManagerParams;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.HttpContext;

import com.nostra13.universalimageloader.core.ImageLoader;
public class RestClient{
	private static RestClient _instance;
	// Create and initialize HTTP parameters
    HttpParams  params; 
    private final HttpClient httpClient;
    public HttpContext context;
    private HttpGet httpget;
    //HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
    
    public RestClient()
    {
    	params  = new BasicHttpParams();
    	 
    	
        HttpConnectionParams.setConnectionTimeout(params, 10000);
        HttpConnectionParams.setSoTimeout(params, 10000);      
        HttpConnectionParams.setTcpNoDelay(params, true);
        
    	ConnManagerParams.setMaxTotalConnections(params, 100);
        HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
        // Create and initialize scheme registry 
        SchemeRegistry schemeRegistry = new SchemeRegistry();
        schemeRegistry.register(
                new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));        
        // Create an HttpClient with the ThreadSafeClientConnManager.
        // This connection manager must be used if more than one thread will
        // be using the HttpClient.
        ClientConnectionManager cm = new ThreadSafeClientConnManager(params, schemeRegistry);
        httpClient = new DefaultHttpClient(cm, params);
        context = new BasicHttpContext();
    }
    
    public static RestClient _()
	{
		if(_instance == null)
		{
			_instance = new RestClient();
		}		        
		return _instance;
	}
    
    public  String connect(String url)
    {
    	ImageLoader.getInstance().pause();
    	 String response = "";
    	 httpget = new HttpGet(url);    	 
    	 httpget.addHeader("Accept-Encoding", "gzip");
    	 try {
			HttpResponse httpResponse = httpClient.execute(httpget, context);
			HttpEntity entity = httpResponse.getEntity();

            if (entity != null) {
            	InputStream instream = entity.getContent();
            	
            	Header localHeader = httpResponse.getFirstHeader("Content-Encoding");
            	if(localHeader != null && localHeader.getValue().equalsIgnoreCase("gzip"))
            	{
            		instream = new GZIPInputStream(instream);
            	}
               response = convertStreamToString(instream);

                // Closing the input stream will trigger connection release
                instream.close();
            }	
            
		} catch (Exception e) {
			// TODO Auto-generated catch block
			 httpget.abort();
			e.printStackTrace();
			ImageLoader.getInstance().resume();
		}
    	 ImageLoader.getInstance().resume();
    	 return response  ;  	 
    }
    
    private static String convertStreamToString(InputStream is) {

        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();

        String line = null;
        try {
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return sb.toString();
    }
}

/*import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URLEncoder;
import java.sql.Connection;
import java.util.ArrayList;
import java.util.zip.GZIPInputStream;

import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.HTTP;

import com.nostra13.universalimageloader.core.ImageLoader;

import vn.allmobile.ambnews.utils.Log;


public class RestClient {

    private ArrayList <NameValuePair> params;
    private ArrayList <NameValuePair> headers;
    public HttpClient client;
    private String url;
    private static RestClient _instance = null;
    
    private int responseCode;
    private String message;

    private String response;

    public String getResponse() {
        return response;
    }

    public String getErrorMessage() {
        return message;
    }

    public int getResponseCode() {
        return responseCode;
    }

    
    public static RestClient _()
	{
		if(_instance == null)
		{
			_instance = new RestClient();
		}
		_instance.params = new ArrayList<NameValuePair>();
		_instance.headers = new ArrayList<NameValuePair>();
        
		return _instance;
	}
    
    public ClientConnectionManager getConnectionManager()
    {
    	return this.client.getConnectionManager(); 
    }
    
    
    public void releaseConnection()
    {
    	ClientConnectionManager clConnectionClient = this.getConnectionManager();
    	ConnectionM
    }
    public RestClient()
    {
    	client = new DefaultHttpClient();
        HttpParams localHttpParams = client.getParams();        
        HttpConnectionParams.setConnectionTimeout(localHttpParams, 10000);
        HttpConnectionParams.setSoTimeout(localHttpParams, 10000);      
        HttpConnectionParams.setTcpNoDelay(localHttpParams, true);
    }

    public  String connect(String url)
    {
    	Log.v("load url:" + url);
    	ImageLoader.getInstance().stop();    	
    	
    	this.AddHeader("Accept-Encoding","gzip"); 
    	try {
    		this.Execute(RequestMethod.GET,url);
    	} catch (Exception e) {
    	    e.printStackTrace();
    	}
    	String respone = this.getResponse();    	
    	ImageLoader.getInstance().resume();    	
    	return respone;
    }
    	
    public void AddParam(String name, String value)
    {
        params.add(new BasicNameValuePair(name, value));
    }

    public void AddHeader(String name, String value)
    {
        headers.add(new BasicNameValuePair(name, value));
    }
    
    public enum RequestMethod
    {
    	GET,
    	POST
    }
    public void Execute(RequestMethod method,String url) throws Exception
    {
    	this.url = url;
        switch(method) {
            case GET:
            {
                //add parameters
                String combinedParams = "";
                if(!params.isEmpty()){
                    combinedParams += "?";
                    for(NameValuePair p : params)
                    {
                        String paramString = p.getName() + "=" + URLEncoder.encode(p.getValue(),"UTF-8");
                        if(combinedParams.length() > 1)
                        {
                            combinedParams  +=  "&" + paramString;
                        }
                        else
                        {
                            combinedParams += paramString;
                        }
                    }
                }
                
                HttpGet request = new HttpGet(url + combinedParams);

                //add headers
                for(NameValuePair h : headers)
                {
                    request.addHeader(h.getName(), h.getValue());
                }

                executeRequest(request, url);
                break;
            }
            case POST:
            {
                HttpPost request = new HttpPost(url);

                //add headers
                for(NameValuePair h : headers)
                {
                    request.addHeader(h.getName(), h.getValue());
                }

                if(!params.isEmpty()){
                    request.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
                }

                executeRequest(request, url);
                break;
            }
        }
    }

    private void executeRequest(HttpUriRequest request, String url)
    {
    		HttpResponse httpResponse;

        try {
            httpResponse = client.execute(request);
            responseCode = httpResponse.getStatusLine().getStatusCode();
            message = httpResponse.getStatusLine().getReasonPhrase();

            HttpEntity entity = httpResponse.getEntity();

            if (entity != null) {
            	
            	InputStream instream = entity.getContent();
            	
            	Header localHeader = httpResponse.getFirstHeader("Content-Encoding");
            	if(localHeader != null && localHeader.getValue().equalsIgnoreCase("gzip"))
            	{
            		instream = new GZIPInputStream(instream);
            	}
                response = convertStreamToString(instream);

                // Closing the input stream will trigger connection release
                instream.close();
            }

        } catch (ClientProtocolException e)  {
            client.getConnectionManager().shutdown();
            e.printStackTrace();
        } catch (IOException e) {
            client.getConnectionManager().shutdown();
            e.printStackTrace();
        }
    }

    
}
*/